/usr/include/mircommon/mir/fd.h is in libmircommon-dev 0.26.3+16.04.20170605-0ubuntu1.1.
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1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 | /*
* Copyright © 2014 Canonical Ltd.
*
* This program is free software: you can redistribute it and/or modify it
* under the terms of the GNU Lesser General Public License version 3,
* as published by the Free Software Foundation.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public License
* along with this program. If not, see <http://www.gnu.org/licenses/>.
*
* Authored by: Kevin DuBois <kevin.dubois@canonical.com>
*/
#ifndef MIR_FD_H_
#define MIR_FD_H_
#include <memory>
namespace mir
{
//TODO: remove once mir::Fd is used more pervasively.
// some existing code does not really allow us to transfer or share the ownership
// of the fd. Constructing using mir::Fd(IntOwnedFd(int)) will help transition the existing
// code to using the mir::Fd type properly.
struct IntOwnedFd
{
int int_owned_fd;
};
class Fd
{
public:
//transfer ownership of the POD-int to the object. The int no longer needs close()ing,
//and has the lifetime of the Fd object.
explicit Fd(int fd);
explicit Fd(IntOwnedFd);
static int const invalid{-1};
Fd(); //Initializes fd to the mir::Fd::invalid;
Fd(Fd&&);
Fd(Fd const&) = default;
Fd& operator=(Fd);
//bit of a convenient kludge. take care not to close or otherwise destroy the FD.
operator int() const;
private:
std::shared_ptr<int> fd;
};
} // namespace mir
#endif // MIR_FD_H_
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